Проверил, получаем вот это
VKError: Error(code = '210', description = 'Access to wall's post denied', params = '[{u'value': u'1', u'key': u'oauth'}, {u'value': u'wall.delete', u'key': u'method'}, {u'value': u'5ac95ded50eb974349101382448764c80505e8dbfad8caacdcbb353f77938d7a4a5f44337703aafe24955', u'key': u'access_token'}, {u'value': u'296', u'key': u'post_id'}, {u'value': u'1381344562', u'key': u'timestamp'}, {u'value': u'-59154616', u'key': u'owner_id'}]')